KV-S7097, KV-S7077 - Panasonic Other Service Manuals Service Manual (repair manual). Page 112

112

4. Carriage Home Detector does 

not work correctly.

1. Check the alignment of the Carriage Home 

Detector and its actuator is proper. 

2. Execute “Key / Sensor”  test in Sec.9.3.7 to 

check the sensor condition.

3. Check the following connection and solder-

ing condition of each connector.
a. CN10 (CARRIAGE HOME DETECTOR 

Board) to CN513 (MAIN Board)

4. Check the soldering condition of IC3 and its 

surrounding circuit on the CARRIAGE 
HOME DETECTOR Board to repair it.

5. Check the following signals.

CRHOME signal (CN10-1st pin on the CAR-
RIAGE HOME DETECTOR Board, IC524-
A11 pin on the MAIN Board): Approx. 3 V 
(when the actuator interrupts the detector)

6. Replace faulty parts or boards.

F60 (Front-side gain
adjustment error)

50

00

00

00 1. Scanning Glass (F) is dirty.

Clean the glass surface in the Sec. 7.2.4.

2. CIS Unit (F) does not work prop-

erly.

1. Check if the White Standard Sheet is not 

dirty and not peeled, then is stuck properly.

2. Execute Focus test in the Sec.9.3.7. to check 

the peak level.

3. Check that LED (F) lights during Focus test.
4. Execute Shading adjust in the Sec.9.3.8. to 

adjust the shading correction level.

5. Check the following connections and solder-

ing condition on each connector.

a. CIS Unit (F) to CN100 (CIS (F) RELAY 

Board)

b. CN103, CN104 (CIS (F) RELAY Board) to 

CN502, CN503  (MAIN)

c. CIS Unit (F) to CN101, CN102 (CIS (F) 

RELAY Board)

6. Check the power supply for LED.

 CN502-7, 8th pin (MAIN Board) : 12 V.

7. Replace faulty parts or boards.

3. Pixel data from CIS Unit (F) or 

image processing circuit has 
some problems.

1. Check the following connections and solder-

ing condition on each connector.

a. CIS Unit (F) to CN100 (CIS (F) RELAY 

Board)

b. CN103, CN104 (CIS (F) RELAY Board) to 

CN502, CN503  (MAIN Board)

2. Check the following power supply to MAIN 

Board.
 CN502-9, 10 pin (MAIN Board) : 5.0 V

3. Check the soldering condition of the 

CN4,IC16, and their surrounding circuit on 
the MAIN Board.

4. Replace faulty parts or boards.

F61 (Front-side
black level error)

51

00

00

00 1. Pixel data from Optical Unit

    Front or image processing
    circuit has some problems.

1.Check if the White Standard Sheet is not dirty
   and not peeled, then is stuck properly.
2.Refer to the above 3rd item on the F60.

F62 (Back-side gain
adjustment error)

52

00

00

00 1. Scanning Glass (B) is dirty.

Clean the glass surface in the Sec. 4.2.4.